From news, to shitposting, to memes, to more shitposting, Lemmy feels vibrant, active, lighthearted, fun and even powerful. Mastodon feels like a fucking funeral.
I honestly think the tiny fraction of MAU might be the reason. Something like once you exceed a Dunbar Number of contacts in a community it starts to go downhill.
Quality is higher when people want to be somewhere specific based on content or types of users and not because of the number of users.
Quality goes down when people are somewhere because everyone else is there.
The latter tends to have a higher proportion of malicious trolls and other people who crave conflict because they need a large enough crowd to get away with those kind of behaviors.
Lemmy naturally concentrates unconnected users with similar interests thanks to reddit-style communities. Mastodon follows the Twitter style where you have to find and follow individual users to get their microblog content, and its harder to isolate certain topics or interests except across the entire service via hashtags. Individual users on their own are very uninteresting and bland.
Lemmy has fewer users but they as a whole generate more active content than Mastodon does thanks to community specialization, since the Twitter style posts require some critical mass of users following to generate interesting discussion (something that basically never happens unless you’re already a celebrity)
To add to this, on Lemmy I often find myself both agreeing and disagreeing with a user depending on the topic and community. It adds a layer of additional context and nuance to that user. If I was just to follow the user vs. community, however, I may get the impression that the user is not worth following if I happen to run across them on a topic that we have disagreements on.
I’ve had times where i’ll have a negative interaction with someone on lemmy and see them later in another thread and they’re cool again. On Mastodon if you have a single bad experience you’ve probably already blocked each other and that chance to reconcile never comes up again.
They don’t have beans on Mastodon.
Just guessing here, but Lemmy is generally content focused, where it feels like mastodon and twitter have more of a focus on the interaction between users. This would mean that Mastodon needs a lot of active users to function, where a lemmy community can be largely carried by just a few really active posters.
